Still puttering on the extension. Went as far as I could this morning, now need some bushings and make a longer pitman rod. And before the questions start, the knife section is the same length as the shorter bar, 4 feet. It was kept this length hoping that the stress will be about the same on the bolts, bushings, etc. I thought about going to a John Deere style pitman rod and connections, but it requires too much modification. Hoping to have this on the machine before the grass dies.